import java.util.ArrayList;
import java.util.List;
import java.util.Random;

public class Cards {

    public static final String[] suits={"♥","♠","♣","♦"};

    public List<Card> buyCard(){
        List <Card> cardList=new ArrayList<>();
        for (int i  = 0; i < 4; i++) {
            for (int j = 1; j <=13; j++) {
                int rank=j;
                String suit=suits[i];
                Card card=new Card(rank,suit);
                cardList.add(card);
            }
        }
        return cardList;
    }
    public void shuffle(List<Card> cardList){
        Random random=new Random();
        for (int i = cardList.size()-1; i >0; i--) {
            int rand= random.nextInt(i);
            swap(cardList,i,rand);
        }

    }
    private void swap(List<Card> cardList,int i,int j){
        Card tmp=cardList.get(i);
        cardList.set(i,cardList.get(j));
        cardList.set(j,tmp);
    }

    public void drawCard(List<Card> cardList){
        List<Card> hand1=new ArrayList<>();
        List<Card> hand2=new ArrayList<>();
        List<Card> hand3=new ArrayList<>();

        List<List<Card>> hands=new ArrayList<>();
        hands.add(hand1);
        hands.add(hand2);
        hands.add(hand3);
        for (int i = 0; i < 5; i++) {
            for (int j=0;j<3;j++){
                Card card=cardList.remove(0);
                hands.get(j).add(card);

            }
        }
        System.out.println("第一个人的牌"+hand1);
        System.out.println("第二个人的牌"+hand2);
        System.out.println("第三个人的牌"+hand3);


    }
}
